Super-Gaussian laser beam shaping using deformable mirrors and intrinsic beam quality metrics
Anno: 2008
Autori: Avino S., Potsaid B., Wen J.T.
Affiliazione autori: Center for Automation Technologies and Systems, Rensselaer Polytechnic Institute, Troy, NY, USA
Abstract: We present a beam shaping method using deformable mirrors without using a target beam shape. The key to the method is the use of an image-based metric on the quality of beam with respect to the desired attributes of the super-Gaussian output beam. This technique iteratively adjusts the deformable mirror shape to minimize the metric measured using a charge-coupled device camera. Since the algorithm does not use a target beam for the optimization, it produces the resulting super-Gaussian beam geometry consistent with the constraints imposed by the limited stroke and the finite number of actuators of the deformable mirror.
Giornale/Rivista: PROCEEDINGS OF SPIE
Volume: 7266 Da Pagina: 72660P-1 A: 72660P-8
Parole chiavi: Adaptive optics; Beam shaping;